The folks of Dunsbrook are a simple, fearful people who have embraced a strange cult, but their doctor harbors no such delusions. He is a man of science, after all. When a child is born of a villager's tryst with an outsider, it is up to the Good Doctor Ambrose to show the townspeople that the child is free of demon blood. What they are about to find out, however, is that their doctor may have a few dark secrets of his own.